A recent weeklong power outage saw my family and I perform the ultimate realworld test on our Fronius inverter and BYD battery backup system.

The outage occurred between Christmas and NYE during a time when we had family visiting meaning there were 14 people in the house all vying for the valuable energy.

In this video I walk through the experience both good and the bad and things we learned along the way.


Specifications
Inverter: Fronius Gen24 Symo 3 phase / 10kw
Battery: BYD Premium HVM, 5 modules, 13.5 kw/h storage and 6kw maximum charge/discharge
Panels: Sunpower, 15kw

NOTE: It was brought to my attention by a colleague that in Australia at least you can request a remote technician password reset at the following email: [email protected]

Timecodes

00:00 Start
01:17 Grid Changeover Experience
02:31 Battery Backup Reserve SoC
03:21 Changing SoC Reserve Amount
04:07 Get your inverter technician password!
05:14 Initial Stability
06:13 No Brownout Just Cutout
06:35 3 Phase Complexity
08:49 What the phase?
10:08 Monitoring
10:21 How much can you pull?
12:23 Blackout in a blackout
14:13 Inverter cannot power cycle on at night
14:52 Backup restart attempts
15:34 Powering on the Battery
16:43 Focus on the battery
18:44 Why Fronius and BYD and not Tesla
20:27 Downsides